Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e564693a0cd8472…

MALICIOUS

PDF

81.2 KB Created: 2021-02-25 00:45:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 581453c0a851f6feb01f812b2f8d500f SHA-1: c6664ba2e5ec2f9332f31978f118f9d66197479f SHA-256: 1e564693a0cd8472ffba16b9105c67255d1df32ea60c566bf3243705aeaceac9
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating maliciousness. The document contains numerous embedded URLs, many pointing to disposable hosting and employing UTM parameters, suggesting a link farm designed to redirect users to malicious sites. The presence of these links and the overall detection profile strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://jottigo.ru/aws?utm_term=california+association+of+realtors+lease+agreement+2019 PDF link annotation
    • https://cdn.sqhk.co/fumamimed/jcKTLyG/touchgrind_bmx_2_full_game_ios.pdfIn PDF document text
    • https://cdn.sqhk.co/panafilaputu/hhfhjbd/hooked_chat_stories_atm.pdfIn PDF document text
    • https://xogepojofaridel.weebly.com/uploads/1/3/2/7/132741214/pesuxof-rigawixumiti-xejiga-jikukebow.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367646/normal_5fd5f4036972e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454430/normal_5fd63f42679e1.pdfIn PDF document text
    • https://xududegugi.weebly.com/uploads/1/3/1/6/131636960/rabisi-fekilisuvumo-pezamekorek-fuwugogoduzi.pdfIn PDF document text
    • http://wivaserana.mywebcommunity.org/best_business_analytics_courses_in_india_with_placements.pdfIn PDF document text
    • https://zujuwedidikaf.weebly.com/uploads/1/3/4/3/134375258/lopomuzekafi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403543/normal_601ee6c415d96.pdfIn PDF document text
    • https://cdn.sqhk.co/vedimofaw/1Agef9M/flashlight_song_pitch_perfect_download.pdfIn PDF document text
    • https://cdn.sqhk.co/famuxina/j4iehgf/site_usisaude_usiminas.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411483/normal_601b2f2cdbbf7.pdfIn PDF document text
    • http://nuloriwilorij.scienceontheweb.net/95114058920.pdfIn PDF document text
    • https://berekiba.weebly.com/uploads/1/3/1/4/131482976/6317091.pdfIn PDF document text
    • http://vitofemegawe.getenjoyment.net/xerox_workcentre_7855_specs.pdfIn PDF document text
    • https://losasogewago.weebly.com/uploads/1/3/1/4/131437886/f3843411fb431d6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xikimafelote.epizy.com/ionesco_cantatrice_chauve.pdfIn PDF document text
    • http://rulamiji.onlinewebshop.net/igora_royal_e-1_how_to_use.pdfIn PDF document text
    • http://kapirexazi.onlinewebshop.net/gewepavorevotokajisidigi.pdfIn PDF document text
    • http://xuvekixofeku.onlinewebshop.net/20518585349.pdfIn PDF document text
    • http://wotidupodugi.myartsonline.com/computer_lab_assistant_job_interview_questions_and_answers.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fc59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC59 5588 bytes
SHA-256: 56142545941a18b24684d98e7285b3afd16e96d9d67f53ac5a9d040baef7cf32
font_01_sfnt_off00010f4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F4E 11628 bytes
SHA-256: 26e0a83f8dc1ddd1c8a68b476bf1062bb1c8848607a8270b6314ad1a2dcf4701

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